Glow stick



FIG. 1 is a perspective view of the glow stick according to the present design;

FIG. 2 is a right side elevation view of the design of FIG. 1;

FIG. 3 is a left side elevation view of the design of FIG. 1;

FIG. 4 is a top plan view of the design of FIG. 1, the bottom plan view being a mirror image of the top plan view;

FIG. 5 is a front elevation view of the design of FIG. 1; and,

FIG. 6 is a rear elevation view of the design of FIG. 1. 

The ornamental design for an glow stick, as shown and described. 